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How do I save a String to a text file using Java?
In Java, I have text from a text field in a String variable called "text".
24 Answers
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MongoDB: How to update multiple documents with a single command?
...: 'field1', field2: 'field2'})
New in version 3.2
Params::
{}: select all records updated
Keyword argument multi not taken
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error: Unable to find vcvarsall.bat
I tried to install the Python package dulwich :
42 Answers
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How to get std::vector pointer to the raw data?
...he iterator returned by begin() (as the compiler warns, this is not technically allowed because something.begin() is an rvalue expression, so its address cannot be taken).
Assuming the container has at least one element in it, you need to get the address of the initial element of the container, whi...
How to convert JSON to a Ruby hash
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Assuming you have a JSON hash hanging around somewhere, to automatically convert it into something like WarHog's version, wrap your JSON hash contents in %q{hsh} tags.
This seems to automatically add all the necessary escaped text like in WarHog's answer.
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Should I Dispose() DataSet and DataTable?
... both implement IDisposable, so, by conventional best practices, I should call their Dispose() methods.
10 Answers
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Inserting data into a temporary table
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To insert all data from all columns, just use this:
SELECT * INTO #TempTable
FROM OriginalTable
Don't forget to DROP the temporary table after you have finished with it and before you try creating it again:
DROP TABLE #TempTable
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Django Forms: if not valid, show form with error message
...ee. I return the same form that I got in. The error messages have automatically been added to it by the is_valid() function.
– user984003
Feb 1 '13 at 13:57
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Easiest way to check for an index or a key in an array?
... associative array)
[ ${array[key]+abc} ] && echo "exists"
Basically what ${array[key]+abc} does is
if array[key] is set, return abc
if array[key] is not set, return nothing
References:
See Parameter Expansion in Bash manual and the little note
if the colon is omitted, the ope...
What does Provider in JAX-RS mean?
...tomizing the JAX-RS runtime. You can think of them as plugins that (potentially) alter the behavior of the runtime, in order to accomplish a set of (program defined) goals.
Providers are not the same as resources classes, they exist, conceptually, at a level in-between resources classes and the JAX...